380405: Capacitance Decade Box


  • Durable construction
  • Case may be grounded separately
  • 3 binding posts permit isolated substitutions
  • 5% Capacitance substitution from 100pF to 11,111µF
  • Excellent for circuit development
  • Five decade ranges of capacitance
  • English Datasheet
  • English User’s Manual

Available on back-order

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Capacitance box with 5 decade ranges of capacitance

The Extech 380405 Capacitance Decade Box is very popular for product design testing and calibration because it can be substituted into a circuit and function in the place of any component with a standard value easily. Alternatively, it can be used to identify the best value for circuit operation then read that value from the switches. A capacitor of the size indicated by the decade box switches can then be put into the circuit.

Specifications Range
Capacitance ranges 100pF to 11.111uF in 100pF steps
Internal Residual Cap 50pF maximum
Voltage limit 50VDC (non-polarized capacitors)
Connection Three (3) binding posts
Accuracy 5% (< =1uF: 1kHz test frequency; > 1uF: 100Hz test frequency)
Operating conditions Temperature: 32 to 122°F (0 to 50°C) / Humidity: < 80%RH
Dimensions/Weight 5.79 x 4.61 x 1.3″ (14.7 x 11.7 x 3.3cm) / Approx. 0.69 lbs. (312g)